My water parameters are good but my guppies keep getting swollen bellies then die. What could be the cause?

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When you say good, what exactly do you mean? What size is the tank? What’s the stocking? How much do you feed them daily? What do you feed them? Do their scales protrude? Any other symptoms? Can we get a picture of the guppies and the tank?

Just upgraded from 20g to 55g about 3 weeks ago. My parameters have stayed 0,0,40 the whole 3 weeks. Used HOB, gravel and deco from 20g. (still running to feed the new canister filter) The last guppies that died were in the 20g. I have one female one very young male and 7 varying age fry. 8 neons, 3 mystery snails and a coolie loach. The last guppy to die was a adult male. I just cleaned my tank and found a baby in the corner. My current female must just be pregnant. This may be an unnecessary question at the moment? It was just strange they swelled up and died.

Just upgraded from 20g to 55g about 3 weeks ago. My parameters have stayed 0,0,40 the whole 3 weeks. Used HOB, gravel and deco from 20g. (still running to feed the new canister filter) The last guppies that died were in the 20g. I have one female one very young male and 7 varying age fry. 8 neons, 3 mystery snails and a coolie loach. The last guppy to die was a adult male. I just cleaned my tank and found a baby in the corner. My current female must just be pregnant. This may be an unnecessary question at the moment? It was just strange they swelled up and died.

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How many of the guppies you had died? Did they all die the same way? It kind of sounds like dropsy or maybe constipation, so I need to know whether you feed them too much and whether their scales protruded before they died.

They probably do eat too much as they love the snail jello. The four that have died, did the same way. Hung out on top and just kind of exploded. 3 females 1 male. It really didnt look like the scales protruded though.

They probably do eat too much as they love the snail jello. The four that have died, did the same way. Hung out on top and just kind of exploded. 3 females 1 male. It really didnt look like the scales protruded though.

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Can I get a picture of the current guppies? Do they seem overweight? It may not seem like a big deal, but overfeeding can lead to fatalities if not taken care of.

I am going to add more fish. I just started my new filter and tank about 3 weeks ago(with ALL of my 20 gallon substate, filter and deco). I dont want to overload it until im sure its cycled or going to cycle. Seems all good so far.

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